MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25682479e4d05e505c6f4950070ad1baaead0cd3f3d7631c74709c47fe8e344611c
MD5cd50a68fbba965531d13ae3de7239f47
File Typecab
Size244.6 KB
First Seen2026-05-20
File NameRequested_Doc_0990_7726667_998002.pdf.cab
Tagscab, MassLogger

Malware Family: MassLogger

MassLogger, email tabanlı keylogger'dır.

TypeInfostealer
Programming LanguageC#/.NET
Target PlatformWindows
C2 ProtocolSMTP/FTP
PurposeEmail keylogger
First Seen Year2020

Threat Indicators (IOC)

  • SHA256: 82479e4d05e505c6f4950070ad1baaead0cd3f3d7631c74709c47fe8e344611c
  • MD5: cd50a68fbba965531d13ae3de7239f47

You can verify all hash values of this sample on VirusTotal.

System Cleanup Guide

  1. Disconnect the system from the network immediately
  2. Yeni bir cihazdan banka hesabı, sosyal medya ve e-posta şifrelerini değiştirin
  3. Move crypto wallets to a new address and abandon the old ones
  4. Start a full scan with up-to-date antivirus
  5. Clear saved browser passwords and enable 2FA
  6. Sign out of all sessions on every affected service

YARA Rule Hints

rule MassLogger_SHA256 {
    meta:
        description = "MassLogger sample: 82479e4d05e505c6"
        threat_level = "medium"
        first_seen = "2026-05-20"
    condition:
        hash.sha256(0, filesize) == "82479e4d05e505c6f4950070ad1baaead0cd3f3d7631c74709c47fe8e344611c"
}

MassLogger — Malware Profile

MassLogger credential stealer. PT2600000043.js Portekiz fatura lurü. CommonJS obfuscation. dispatch configuration data.

Malware Type
Infostealer
Programming Language
C#/.NET
C2 Protocol
SMTP/FTP
Target Systems
Windows

Capabilities & Behavior

Tarayıcı Kimlik Bilgileri
Çerez Hırsızlığı
Kripto Cüzdan Çalma
Sistem Bilgisi
Ekran Görüntüsü
FTP/SSH İstemci Şifreleri
E-posta İstemcisi Çalma
Veri Sızıntısı

IOC List (2 indicators)

IOC — MassLogger
# SHA256 82479e4d05e505c6f4950070ad1baaead0cd3f3d7631c74709c47fe8e344611c # MD5 cd50a68fbba965531d13ae3de7239f47
TypeValueNote
sha256 82479e4d05e505c6f4950070ad1baaead0cd3f3d7631c74709c47fe8e344611c Sample:MassLogger
md5 cd50a68fbba965531d13ae3de7239f47 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi